[PVE-User] KSM turning off automagically

[Alexandre DERUMIER]

>>after a few seconds, the file is at 0 again. Is there a reason for this 
>>? Any idea what happens ?
ksm run only when are around 80% of memory usage (because it's use cpu)

you can tune this

/etc/ksmtuned.conf

# KSM_THRES_COEF: Decimal percentage of free RAM
# If free memory is less than this percentage KSM will be activated
# KSM_THRES_COEF=20

# KSM_THRES_CONST: Bytes
# If free memory is less than this number KSM will be activated
# KSM_THRES_CONST=2048


----- Mail original ----- 

De: "Jonathan Schaeffer" <jonathan.schaeffer at univ-brest.fr> 
À: pve-user at pve.proxmox.com 
Envoyé: Mardi 8 Janvier 2013 12:47:56 
Objet: [PVE-User] KSM turning off automagically 

Hi (again) all. 

I saw a strange behaviour on my proxmox nodes. 

KSM was turned off, so I tried to enable it : 

# echo 1 > /sys/kernel/mm/ksm/run 

after a few seconds, the file is at 0 again. Is there a reason for this 
? Any idea what happens ? 

regards, 

jonathan 

# pveversion -v 
pve-manager: 2.2-32 (pve-manager/2.2/3089a616) 
running kernel: 2.6.32-17-pve 
proxmox-ve-2.6.32: 2.2-83 
pve-kernel-2.6.32-11-pve: 2.6.32-66 
pve-kernel-2.6.32-17-pve: 2.6.32-83 
lvm2: 2.02.95-1pve2 
clvm: 2.02.95-1pve2 
corosync-pve: 1.4.4-1 
openais-pve: 1.1.4-2 
libqb: 0.10.1-2 
redhat-cluster-pve: 3.1.93-2 
resource-agents-pve: 3.9.2-3 
fence-agents-pve: 3.1.9-1 
pve-cluster: 1.0-34 
qemu-server: 2.0-71 
pve-firmware: 1.0-21 
libpve-common-perl: 1.0-41 
libpve-access-control: 1.0-25 
libpve-storage-perl: 2.0-36 
vncterm: 1.0-3 
vzctl: 4.0-1pve2 
vzprocps: 2.0.11-2 
vzquota: 3.1-1 
pve-qemu-kvm: 1.3-10 
ksm-control-daemon: 1.1-1 



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